i`ve bin havin a bit of trouble with cat shite outside me house lately,its like them yellow stones,so all of a sudden every moggy in the street visits every night and drops it load outside me door......i went to taskers today to try an get summit to put down on the floor,they had nowt,but i saw this "cat-gard"plugs into the mains,pisses the cats off,just the cats,not ar traceys dog or dylan the rabbit....anyways,its now fired up by said excrement haven...so hopefully its done the trick,just bin out,no sign of any scrawney cats....anyways,inside the box was"how to site an set up your cat-gard"...it says,mount on wall,blah,blah,blah,please note that cat reactions will vary considerably when exposed to the alarm(not mike peters)....the last sentence says"deaf cats will not be affected".......